Maximum function in matlab

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Help Center Help Center. If A is a vector, then max A returns the maximum of A. If A is a matrix, then max A is a row vector containing the maximum value of each column of A. If A is a multidimensional array, then max A operates along the first dimension of A whose size is greater than 1 , treating the elements as vectors. The size of M in this dimension becomes 1 , while the sizes of all other dimensions remain the same as in A. If A is an empty array whose first dimension has zero length, then M is an empty array with the same size as A. If A is a table or timetable, then max A returns a one-row table containing the maximum of each variable.

Maximum function in matlab

Help Center Help Center. If A is a vector, max A returns the largest element in A. If A is a matrix, max A treats the columns of A as vectors, returning a row vector containing the maximum element from each column. If A is a multidimensional array, max operates along the first nonsingleton dimension and returns an array of maximum values. If the largest value occurs multiple times, the index of the first occurrence is returned. The output, M , is a row vector that contains the largest elements from each column of A. Vector I contains the indices to the minimum elements in M. C contains the largest elements from each pair of corresponding elements in A and B. The function finds the largest element of a complex vector by taking the element with the largest magnitude. In vector a , the largest elements, at position 2 and 3 , have a magnitude of 6. The max function returns the largest element in output x and the index of that element in output y.

Search Answers Clear Filters. In current versions, using vectorization or 'all' are faster for small arrays and roughly equivalent for large arrays.

Help Center Help Center. If A is a vector, then max A returns the maximum of A. If A is a matrix, then max A is a row vector containing the maximum value of each column. For an input A that contains symbolic expression, the symbolic max function returns an unevaluated expression that is reduced by eliminating arguments that do not represent maximum values. The output may have another argument that represents the condition for the symbolic variable. For example, max A,[],'includenan' includes all NaN values in A while max A,[],'omitnan' ignores them. For example, if A is a matrix, then max A,[],2 is a column vector containing the maximum value of each row.

Help Center Help Center. Computing the first derivative of an expression helps you find local minima and maxima of that expression. For example, create a rational expression where the numerator and the denominator are polynomial expressions. Plotting this expression shows that it has horizontal and vertical asymptotes, a local minimum between -1 and 0, and a local maximum between 1 and 2. By default, when you operate on this expression, results can include both real and imaginary numbers. If you are interested in real numbers only, you can set the permanent assumption that x belongs to the set of real numbers. This allows you to avoid complex numbers in the solutions and it also can improve performance. To find a horizontal asymptote, compute the limit of f for x approaching positive and negative infinities. To find a vertical asymptote of f , find the roots of the polynomial expression that represents the denominator of f. To get an explicit solution for such equations, try calling the solver with the option MaxDegree.

Maximum function in matlab

Help Center Help Center. If A is a vector, max A returns the largest element in A. If A is a matrix, max A treats the columns of A as vectors, returning a row vector containing the maximum element from each column. If A is a multidimensional array, max operates along the first nonsingleton dimension and returns an array of maximum values. If the largest value occurs multiple times, the index of the first occurrence is returned. The output, M , is a row vector that contains the largest elements from each column of A. Vector I contains the indices to the minimum elements in M.

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Rohit Pappu on 29 Oct Those are not solutions to when the function f becomes 0: those are the solutions to when the derivative becomes 0. Commented: Steven Lord on 11 Dec Select the China site in Chinese or English for best site performance. Largest Element of a Complex Vector. If you can identify a finite search interval [a,b] where the solution lies, you can do something like this:. For example:. If either A or B is a table or timetable, then the other input can be an array, table, or timetable. Based on your location, we recommend that you select:. Index, returned as a scalar, vector, matrix, multidimensional array, or table.

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Do you have any suggestions what can I use with symbolic variables? John Doe on 31 Jan To find the maximum over all dimensions of a matrix, use the 'all' option. If the largest value occurs multiple times, the index of the first occurrence is returned. Input Arguments collapse all A — Input fi array scalar vector matrix multidimensional array. Close Mobile Search. If A is a 0-by-0 empty array, then max A is as well. Reload the page to see its updated state. For more information, see Direct Calculations on Tables and Timetables. An Error Occurred Unable to complete the action because of changes made to the page. See Also. No, overwrite the modified version Yes. You may receive emails, depending on your communication preferences. Consider a 2-byby-3 input array, A. I believe OP wants the maximum element along all dimensions.